clicksafter putting the impeller back

[sameh]

Hi

I took the empeller to the technician and was informed that it is in a good condition and i better use it but in the opposite side.

after putting it back (first time I do it) as the guidlines says-but in the opposite side, and returning the lower ingine part, I started to move the propeller by hand. when doing that I hear clicks! 6-7 clicks per propeller round that I assume coming from the impeller.
the impeller actually has 6 "ribs".

I think it is because i put the impeller in the opposite direction and that when running the engine it will settle down, have water and produce no sounds.

I hope I get your opinion whether the clicks is normal or not.

I don't have a battery yet and don't want to run the engine until I make sure the impeller is fine.

many thanks

sameh

 

[carholme]

Re: clicksafter putting the impeller back

sameh;

I doubt you would hear the impeller when rotating the prop.

For correct action of the prop after installing the lower unit and using finger pressure only:

Forward gear: Prop should ratchet (click) when turned Clockwise, prop should not turn Counter clockwise
Neutral gear: Prop should spin freely in either direction
Reverse gear: Prop should not turn in either direction

Gerry

 

[sameh]

Re: clicksafter putting the impeller back

Hi gerry,
without turning the engine, I put forward, neutral and reverse. I all three conditions the propeller did not go counterclockwise (even in neutral). it did go clockwise! could that be due to the fact that the engine was only recently turned on for a few minutes after months of sleep?

what do you think the clicks are if not due to the old impeller "ribs" bent to the right (clockwise) because i put them now upside down, and when the propeller moves the ribs stretch back and make this sound...? still no water inside!

could i have done something wrong causing those clicks and could that be related to the gear?

by the way, I also replaced gear oil...

 

[sameh]

Re: clicksafter putting the impeller back

another thing: I don't remember if i took of the lower part when the gear was on neutral.
IS it important to put back the lower part with the same gear position as when taking it off?
could the clicks be of the gear shift (the part seen infront of the impeller)?

 

[carholme]

Re: clicksafter putting the impeller back

The boat controls have to be in the same gear as the lower unit when you are installing it. The clicks are just the clutch dogs clicking against the ears of the forward gear as you rotate the prop in a CW direction. In this manner, the prop is not being driven by the driveshaft. If you turn the main driveshaft CW in forward gear, the ears will engage the forward gear, the prop turns and you will not hear the clicks. This is normal.

You should be able to see this much clearer when I send you the manual.

Gerry

 

[sameh]

Re: clicksafter putting the impeller back

I still find it hard to understand because the english terms and mechanics are new to me. but did you say "this is normal" meaning the clicks I hear are o.k. and don't indicate something was done wrong?

sameh

 

[oldman570]

Re: clicksafter putting the impeller back

sameh;

I doubt you would hear the impeller when rotating the prop.

For correct action of the prop after installing the lower unit and using finger pressure only:

Forward gear: Prop should ratchet (click) when turned Clockwise, prop should not turn Counter clockwise
Neutral gear: Prop should spin freely in either direction
Reverse gear: Prop should not turn in either direction

Gerry

As Gerry has stated, you should only hear clicks when the prop is turnd while in FWD gear and not at any other time. IMO the impeller should be replaced if the fingers have taken a set and reversing them will cause more chance of pump falure in a shot time. Best to fix and replace parts as needed the first time rather than to still have to do everything again later. JMO
Oldman570

 

[minuteman62-64]

Re: clicksafter putting the impeller back

Flipping the impeller is contrary to everything I've read on this and other sites. You've got the lower unit removed - replace the impeller, it's cheap!

 

[emckelvy]

Re: clicksafter putting the impeller back

The impeller is clicking because of being reversed and probably was installed dry. Even when wet the blades will naturally make a little noise when turning in the pump. Reversed blades would make more noise than normal.

I do agree with the other posters, DO NOT use an old impeller that has been installed backwards to the original rotation.

Once the blades have taken a set, you run the risk of breaking them and that's even more trouble and expense than installing a new impeller in the first place!

The only exception to this would be if a new impeller had been installed and never run. In that case, the blades would remain flexible and would likely be OK to be reversed. Still not a good practice, though.

Hope this helps and Good Luck.........ed

 

[sameh]

Re: clicksafter putting the impeller back

The impeller is clicking because of being reversed and probably was installed dry. Even when wet the blades will naturally make a little noise when turning in the pump. Reversed blades would make more noise than normal.

I do agree with the other posters, DO NOT use an old impeller that has been installed backwards to the original rotation.

Once the blades have taken a set, you run the risk of breaking them and that's even more trouble and expense than installing a new impeller in the first place!

The only exception to this would be if a new impeller had been installed and never run. In that case, the blades would remain flexible and would likely be OK to be reversed. Still not a good practice, though.

Hope this helps and Good Luck.........ed

thanks guys for the advice. unfortunate though to get recommendation for what i did from a mechanic who is concidered to be one of the few well known experts here! i hope it is me who got him wrong rather than he really meant as i understood!

but, i understood from some that the click are , quoted:
"The teeth on the clutch dog mesh with the teeth in the centre of the gear to drive the prop" so it may be the reason and not the impeller. i agree with that according to the soud produces which suits more this than a rubber sound actually.

 

[Maxz695]

Re: clicksafter putting the impeller back

Yes it was the clutch dog meshing with the gear teeth ratcheting you heard. Impellors do not make a ratcheting noise. As for the impellor if the fins are straight out and not curved (Formed) It can be used but as everyone hear is trying to tell you. It would be wise to spend a few dollars for a new one as they should be changed at least every two years anyway. Might as well not take the chance and get it done now. That will give you two years as apposed to not knowing when you should replace it. JMO Here is you statment " I started to move the propeller by hand. when doing that I hear clicks! 6-7 clicks per propeller round that I assume coming from the impeller". You where turning the prop in the direction it makes the ratcheting. It ratchets one way and locks in the other this is correct infomation. end of story